ac
alternating
amp
background
cable
circuit
closeup
connection
construction
current
danger
dielectric
distribution
electric
electrical
electricity
energy
engineering
equipment
generation
generator
grid
high
industrial
industry
infrastructure
insulation
insulator
isolation
line
metal
no people
phase
plant
power
sky
station
steel
substation
supply
system
technology
three
tower
transformer
transmission
up
voltage
watt
wire